diff options
Diffstat (limited to 'test')
-rw-r--r-- | test/asan/TestCases/invalid-pointer-pairs.cc | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/test/asan/TestCases/invalid-pointer-pairs.cc b/test/asan/TestCases/invalid-pointer-pairs.cc new file mode 100644 index 000000000..874107cdf --- /dev/null +++ b/test/asan/TestCases/invalid-pointer-pairs.cc @@ -0,0 +1,37 @@ +// RUN: %clangxx_asan -O0 %s -o %t -mllvm -asan-detect-invalid-pointer-pair + +// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 %run %t k 2>&1 | FileCheck %s -check-prefix=OK -allow-empty +// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t g 2>&1 | FileCheck %s -check-prefix=CMP -check-prefix=ALL-ERRORS +// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t s 2>&1 | FileCheck %s -check-prefix=SUB -check-prefix=ALL-ERRORS +// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1 not %run %t f 2>&1 | FileCheck %s -check-prefix=FREE -check-prefix=ALL-ERRORS + +#include <assert.h> +#include <stdlib.h> + +int main(int argc, char **argv) { + // ALL-ERRORS: ERROR: AddressSanitizer: invalid-pointer-pair + // [[PTR1:0x[0-9a-f]+]] [[PTR2:0x[0-9a-f]+]] + assert(argc >= 2); + char *p = (char *)malloc(42); + char *q = (char *)malloc(42); + switch (argv[1][0]) { + case 'g': + // CMP: #0 {{.*}} in main {{.*}}invalid-pointer-pairs.cc:[[@LINE+1]]:14 + return p > q; + case 's': + // SUB: #0 {{.*}} in main {{.*}}invalid-pointer-pairs.cc:[[@LINE+1]]:14 + return p - q; + case 'k': { + // OK-NOT: ERROR + char *p2 = p + 20; + return p > p2; + } + case 'f': { + char *p3 = p + 20; + free(p); + // FREE: #0 {{.*}} in main {{.*}}invalid-pointer-pairs.cc:[[@LINE+2]]:14 + // FREE: freed by thread + return p < p3; + } + } +} |